100111121211 has 8 divisors (see below), whose sum is σ = 141333347664.
Its totient is φ = 62814821120.
The previous prime is 100111121191. The next prime is 100111121233. The reversal of 100111121211 is 112121111001.
Adding to 100111121211 its reverse (112121111001), we get a palindrome (212232232212).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 100111121211 - 25 = 100111121179 is a prime.
It is not an unprimeable number, because it can be changed into a prime (100111121261) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981481530 + ... + 981481631.
It is an arithmetic number, because the mean of its divisors is an integer number (17666668458).
Almost surely, 2100111121211 is an apocalyptic number.
100111121211 is a deficient number, since it is larger than the sum of its proper divisors (41222226453).
100111121211 is a wasteful number, since it uses less digits than its factorization.
100111121211 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1962963181.
The product of its (nonzero) digits is 4, while the sum is 12.
The spelling of 100111121211 in words is "one hundred billion, one hundred eleven million, one hundred twenty-one thousand, two hundred eleven".